Defense Grid 2: A Matter of Endurance

The Steam Special Edition includes additional content around the DG2 in-game and behind-the-scenes stories. If you purchase or upgrade to the Special Edition you will receive: - A Matter of Endurance: a 30 minute flash-based audio play that runs on your PC featuring character voices and concept art from a new original story by Hugo award author Mary Robinette Kowal, that takes place between the ev…